Hi again,   I solved the issue. The problem was checkpoint firewall settings. Now vpn tunnel is working good.   But I want to get info about some topics that is stuck in my mind and this is important. Question 1) There are a lot of devices(more then 20) on site A  and site B and they are connected to their own switch. Is it possible to make a site to site vpn for whole devices? Site manager said that they can only give me one cable from their own switch. So i will plug it to meraki mx. Question 2) Location A: 143.161.0.1/24     Location B: 143.161.5.1/24      Is working good. But, Location A: 143.161.0.1/16    Location B: 143.161.5.1/16    Did not work. Even meraki dashboard didn't accept this IP set. I wonder what is the explanation of this? Is it not possible to make a vpn between /16 sites? Thank you in advance. ... View more

Hi @GreenMan  There are some PLC and computers on two different sites. These are renewable energy power plant sites. Their local IPs are like that: Location A: 143.161.0.XX     Location B: 143.161.5.XX  They said that we can't change the IP addresses of that devices. So that's why I set up vlan like that. VPN STATUS PAGES: --- --- Everything seems good on that pages but clients are not able to reach to internet for that reason it is not possible to ping between clients from different sites. It is only possible to ping between mx appliances   ... View more

Thank you @Bruce  and @DarrenOC . "VPN ON" is already set buy I couldnt solve the issue. I added some screenshots below for your reference.  LOCATION A: KAVAK LOCATION B: ORTA If there is an another thing to check, please let me know.    ... View more